Vacuum cleaner



FIG. 1 is a top, front, and left side perspective view of a vacuum cleaner showing the new design.

FIG. 2 is a front elevation view of the vacuum cleaner.

FIG. 3 is a left side elevation view of the vacuum cleaner.

FIG. 4 is a rear elevation view of the vacuum cleaner.

FIG. 5 is a right side elevation view of the vacuum cleaner; and,

FIG. 6 is a top plan view of the vacuum cleaner.

The broken line showing portions of the vacuum cleaner is for the purpose of illustrating portions of the vacuum cleaner and forms no part of the claimed design. 

The ornamental design for a vacuum cleaner, as shown and described. 